[1]} also studied the photometric LF of a sample of five FGs. They found a faint-end slope in agreement with the one of regular clusters presented in [2]}. However, it is worth noting that [2]} found an upturn at fainter magnitudes, so that their LF can be fitted with a double Schechter function. This behaviour is not found on the already-cited LF of FGs, because none of these are deep enough. However, [4]} computed a very deep LF for NGC 6482 using spectroscopic data from the Subaru/Suprime-Cam, finding \(\alpha = -1.32\pm 0.05\) . They did not fit a double Schechter function, however a change in the faint-end slope is present also in their fig. 12.
